Help with center of mass point

Hello,

I need to know where the center of mass point at my assembly is.

With the option Mass Propperties I get soms coordinates, are these in reference to the origin?

I unfortunately can't select :Insert > Reference Geometry > Center of Mass

There is no option Center of Mass at Reference Geometry, but I would like to see the Center of Mass in the assembly, even when the Mass Property window is closed.
In customise menu I also can't select Center of Mass

Can someone help?

With kind regards!

SolidworksAssemblies